The book is maus a survivor's tale my father bleeds history.
The son relationship with his father, and his mother. also you can consider the son breaking his promise to his father, also the image of the father in the book, does the son made his father look good in the book, the son feeling toward his mother. also, what art's visit to his psychiatrist shows about the making of Maus. you might consider some of the following: art find the story too scary to think about; he has no message for his audience; he cant tell everyone's story; he cant draw everything correctly, why doe he tells us all these things, how do his feeling affect the way of the book.